In the title salt, C(6)H(9)N(2) (+)·Br(2)I(-), the cation is essentially planar (r.m.s. deviation = 0.0062 Å for the non-H atoms) while the anion is almost linear with a Br-I-Br angle of 177.67 (2)°. The crystal packing shows two anions and two cations connected via N-H⋯Br and (pyridine)N-H⋯Br hydrogen-bonding inter-actions, forming centrosymmetric tetra-mers with R(4) (4)(16) ring motifs. Very weak offset aromatic π-π stacking interactions [centroid-centroid separation = 4.038 (4), slippage = 1.773 Å] also occur.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435817 | PMC |
http://dx.doi.org/10.1107/S1600536812036136 | DOI Listing |
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